All grab rails Ergogrip have a plastic flange with a plastic cover. As the tube is bent to 60º instead of the traditional 90º, your hand and wrist retain a natural position while holding the Ergogrip. In combination with the flange the Ergogrip has a smooth form which offers a firm grip. The diameter of the tube (28.6 mm) offers an exceptionally broad grip for the hand. The space between the tube and the wall gives ample freedom of movement of the hand.